Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Generic Platform Camera Driver |
| 3 | * |
| 4 | * Copyright (C) 2008 Magnus Damm |
| 5 | * Based on mt9m001 driver, |
| 6 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/videodev2.h> |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 19 | #include <media/v4l2-subdev.h> |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 20 | #include <media/soc_camera.h> |
Guennadi Liakhovetski | 50c616f | 2008-10-16 19:49:27 -0300 | [diff] [blame] | 21 | #include <media/soc_camera_platform.h> |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 22 | |
| 23 | struct soc_camera_platform_priv { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 24 | struct v4l2_subdev subdev; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 25 | }; |
| 26 | |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 27 | static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev) |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 28 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 29 | struct v4l2_subdev *subdev = platform_get_drvdata(pdev); |
| 30 | return container_of(subdev, struct soc_camera_platform_priv, subdev); |
| 31 | } |
| 32 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 33 | static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable) |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 34 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 35 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
| 36 | return p->set_capture(p, enable); |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 37 | } |
| 38 | |
Kuninori Morimoto | e7d403f | 2010-05-11 06:14:18 -0300 | [diff] [blame] | 39 | static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd, |
| 40 | struct v4l2_mbus_framefmt *mf) |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 41 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 42 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 43 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 44 | mf->width = p->format.width; |
| 45 | mf->height = p->format.height; |
| 46 | mf->code = p->format.code; |
| 47 | mf->colorspace = p->format.colorspace; |
Kuninori Morimoto | e7d403f | 2010-05-11 06:14:18 -0300 | [diff] [blame] | 48 | mf->field = p->format.field; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 49 | |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 50 | return 0; |
| 51 | } |
| 52 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 53 | static struct v4l2_subdev_core_ops platform_subdev_core_ops; |
| 54 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 55 | static int soc_camera_platform_enum_fmt(struct v4l2_subdev *sd, unsigned int index, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 56 | enum v4l2_mbus_pixelcode *code) |
| 57 | { |
| 58 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
| 59 | |
| 60 | if (index) |
| 61 | return -EINVAL; |
| 62 | |
| 63 | *code = p->format.code; |
| 64 | return 0; |
| 65 | } |
| 66 | |
Kuninori Morimoto | e7d403f | 2010-05-11 06:14:18 -0300 | [diff] [blame] | 67 | static int soc_camera_platform_g_crop(struct v4l2_subdev *sd, |
| 68 | struct v4l2_crop *a) |
| 69 | { |
| 70 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
| 71 | |
| 72 | a->c.left = 0; |
| 73 | a->c.top = 0; |
| 74 | a->c.width = p->format.width; |
| 75 | a->c.height = p->format.height; |
| 76 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 77 | |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | static int soc_camera_platform_cropcap(struct v4l2_subdev *sd, |
| 82 | struct v4l2_cropcap *a) |
| 83 | { |
| 84 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
| 85 | |
| 86 | a->bounds.left = 0; |
| 87 | a->bounds.top = 0; |
| 88 | a->bounds.width = p->format.width; |
| 89 | a->bounds.height = p->format.height; |
| 90 | a->defrect = a->bounds; |
| 91 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 92 | a->pixelaspect.numerator = 1; |
| 93 | a->pixelaspect.denominator = 1; |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
Guennadi Liakhovetski | 84c760a | 2011-07-27 10:06:09 -0300 | [diff] [blame] | 98 | static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd, |
| 99 | struct v4l2_mbus_config *cfg) |
| 100 | { |
| 101 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
| 102 | |
| 103 | cfg->flags = p->mbus_param; |
| 104 | cfg->type = p->mbus_type; |
| 105 | |
| 106 | return 0; |
| 107 | } |
| 108 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 109 | static struct v4l2_subdev_video_ops platform_subdev_video_ops = { |
| 110 | .s_stream = soc_camera_platform_s_stream, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 111 | .enum_mbus_fmt = soc_camera_platform_enum_fmt, |
Kuninori Morimoto | e7d403f | 2010-05-11 06:14:18 -0300 | [diff] [blame] | 112 | .cropcap = soc_camera_platform_cropcap, |
| 113 | .g_crop = soc_camera_platform_g_crop, |
| 114 | .try_mbus_fmt = soc_camera_platform_fill_fmt, |
| 115 | .g_mbus_fmt = soc_camera_platform_fill_fmt, |
| 116 | .s_mbus_fmt = soc_camera_platform_fill_fmt, |
Guennadi Liakhovetski | 84c760a | 2011-07-27 10:06:09 -0300 | [diff] [blame] | 117 | .g_mbus_config = soc_camera_platform_g_mbus_config, |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 118 | }; |
| 119 | |
| 120 | static struct v4l2_subdev_ops platform_subdev_ops = { |
| 121 | .core = &platform_subdev_core_ops, |
| 122 | .video = &platform_subdev_video_ops, |
| 123 | }; |
| 124 | |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 125 | static int soc_camera_platform_probe(struct platform_device *pdev) |
| 126 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 127 | struct soc_camera_host *ici; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 128 | struct soc_camera_platform_priv *priv; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 129 | struct soc_camera_platform_info *p = pdev->dev.platform_data; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 130 | struct soc_camera_device *icd; |
| 131 | int ret; |
| 132 | |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 133 | if (!p) |
| 134 | return -EINVAL; |
| 135 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 136 | if (!p->icd) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 137 | dev_err(&pdev->dev, |
| 138 | "Platform has not set soc_camera_device pointer!\n"); |
| 139 | return -EINVAL; |
| 140 | } |
| 141 | |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 142 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 143 | if (!priv) |
| 144 | return -ENOMEM; |
| 145 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 146 | icd = p->icd; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 147 | |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 148 | /* soc-camera convention: control's drvdata points to the subdev */ |
| 149 | platform_set_drvdata(pdev, &priv->subdev); |
| 150 | /* Set the control device reference */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 151 | icd->control = &pdev->dev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 152 | |
Guennadi Liakhovetski | 1067247 | 2011-07-28 18:36:01 -0300 | [diff] [blame^] | 153 | icd->ops = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 154 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 155 | ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 156 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 157 | v4l2_subdev_init(&priv->subdev, &platform_subdev_ops); |
| 158 | v4l2_set_subdevdata(&priv->subdev, p); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 159 | strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE); |
| 160 | |
| 161 | ret = v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev); |
| 162 | if (ret) |
| 163 | goto evdrs; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 164 | |
| 165 | return ret; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 166 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 167 | evdrs: |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 168 | platform_set_drvdata(pdev, NULL); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 169 | kfree(priv); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 170 | return ret; |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static int soc_camera_platform_remove(struct platform_device *pdev) |
| 174 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 175 | struct soc_camera_platform_priv *priv = get_priv(pdev); |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 176 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 177 | v4l2_device_unregister_subdev(&priv->subdev); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 178 | platform_set_drvdata(pdev, NULL); |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 179 | kfree(priv); |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | static struct platform_driver soc_camera_platform_driver = { |
| 184 | .driver = { |
| 185 | .name = "soc_camera_platform", |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 186 | .owner = THIS_MODULE, |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 187 | }, |
| 188 | .probe = soc_camera_platform_probe, |
| 189 | .remove = soc_camera_platform_remove, |
| 190 | }; |
| 191 | |
| 192 | static int __init soc_camera_platform_module_init(void) |
| 193 | { |
| 194 | return platform_driver_register(&soc_camera_platform_driver); |
| 195 | } |
| 196 | |
| 197 | static void __exit soc_camera_platform_module_exit(void) |
| 198 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 199 | platform_driver_unregister(&soc_camera_platform_driver); |
Magnus Damm | 326c986 | 2008-07-16 23:02:08 -0300 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | module_init(soc_camera_platform_module_init); |
| 203 | module_exit(soc_camera_platform_module_exit); |
| 204 | |
| 205 | MODULE_DESCRIPTION("SoC Camera Platform driver"); |
| 206 | MODULE_AUTHOR("Magnus Damm"); |
| 207 | MODULE_LICENSE("GPL v2"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 208 | MODULE_ALIAS("platform:soc_camera_platform"); |